Summary: Accepted for 26. DAGM-Symposium "Pattern Recognition", Tšubingen, Aug. 2004
Invariants for Discrete Structures - An
Extension of Haar Integrals over Transformation
Groups to Dirac Delta Functions
Hans Burkhardt1
, Marco Reisert1
, and Hongdong Li2
1
University of Freiburg, Computer Science Department,
79110 Freiburg i.Br., Germany
{burkhardt,reisert}@informatik.uni-freiburg.de
2
National ICT Australia (NICTA), Dpt. of Sys. Eng., Australian National
University (ANU), Canberra ACT, Australia
hongdong.li@anu.edu.au
Abstract. Due to the increasing interest in 3D models in various appli-
cations there is a growing need to support e.g. the automatic search or
the classification in such databases. As the description of 3D objects is
not canonical it is attractive to use invariants for their representation. We
recently published a methodology to calculate invariants for continuous